Composite materials for vehicle parts require lightweight, high strength and good impact properties. In this study, the optimized manufacturing conditions of epoxy foam (EF) were investigated to improving mechanical performance of carbon fiber reinforced plastic (CFRP)/EF/CFRP sandwich composites for vehicle parts such as impact, flexural property. The optimal curing temperature was found to be 60 °C, by measuring the reaction rate, volume increase rate, density, cell size, glass transition temperature, and specific compressive strength of the EF. In addition, foams after 180 °C thermal aging were observed, and the properties of the EF cured at 60 °C were the most stable under the thermal aging. The performance of the sandwich EF composites was investigated using compressive, flexural strength, lap shear strength, and impact tests. The optimized cell condition of the EF was correlated to improving interfacial adhesion of sandwich composite.

用于汽车部件的复合材料需要轻质，高强度和良好的冲击性能。在这项研究中，研究了环氧泡沫塑料（EF）的最佳制造条件，以改善用于车辆部件的碳纤维增强塑料（CFRP）/ EF / CFRP夹芯复合材料的机械性能，例如冲击，弯曲性能。通过测量反应速率，体积增加速率，密度，泡孔尺寸，玻璃化转变温度和EF的比抗压强度，发现最佳固化温度为60°C。另外，观察到在180℃热老化后的泡沫，并且在60℃下固化的EF的性能在热老化下最稳定。使用压缩，弯曲强度，搭接剪切强度和冲击试验研究了三明治式EF复合材料的性能。